/*********************************************************************************
 *      Copyright:  (C) 2025 LingYun<iot25@lingyun>
 *                  All rights reserved.
 *
 *       Filename:  thread.c
 *    Description:  This file 
 *                 
 *        Version:  1.0.0(05/03/25)
 *         Author:  LingYun <iot25@lingyun>
 *      ChangeLog:  1, Release initial version on "05/03/25 19:34:21"
 *                 
 ********************************************************************************/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <pthread.h>

void *thread_worker1(void *args);
void *thread_worker2(void *args);

typedef struct worker_ctx_s
{
	int				shared_var;
	pthread_mutex_t	lock;
}worker_ctx_t;

int main(int argc,char **argv)
{
	worker_ctx_t				worker_ctx;
	pthread_t		tid;
	pthread_attr_t	thread_attr;
	
	worker_ctx.shared_var = 1000;
	pthread_mutex_init(&worker_ctx.lock,NULL);

	if( pthread_attr_init(&thread_attr))
	{
		printf("pthread _attr_init() failure: %s\n,strerror(errno)");
		return -1;
	}
	  if( pthread_attr_setstacksize(&thread_attr,120*1024) )
	  {
		  printf("pthread_attr_setstacksize() failure: %s\n", strerror(errno));
		  return -1;
	  }

	  if( pthread_attr_setdetachstate(&thread_attr,PTHREAD_CREATE_DETACHED) )
	  {
		  printf("pthread_attr_setdetachstate() failure: %s\n", strerror(errno));
		  return -1;
	  }
	  
	  pthread_create(&tid,&thread_attr,thread_worker1,&worker_ctx);
	  printf("Thread woreker1 tid[%ld] created ok\n",tid);

	  pthread_create(&tid, &thread_attr, thread_worker2, &worker_ctx);
	  printf("Thread worker2 tid[%ld] created ok\n", tid);


	  while(1)
	  {
		  printf("Main/Control thread shared_var: %d\n",worker_ctx);
		  sleep(10);
	  }

	  pthread_mutex_destroy(&worker_ctx.lock);
}

void *thread_worker1(void *args)
{
	worker_ctx_t			*ctx =(worker_ctx_t *)args;

	if( !args )
	{
		printf("%s() get invalid arguments\n",__func__);
		pthread_exit(NULL);
	}
		printf("Thread worker1 [%ld] start running...\n",pthread_self());
	
		while(1)
		{
			pthread_mutex_lock(&ctx->lock);

			printf("+++: %s before shared_var++: %d\n",__func__,ctx->shared_var);
			ctx->shared_var ++;
			sleep(2);
			printf("+++: %s after sleep shared_var: %d\n",__func__,ctx->shared_var);
			
			pthread_mutex_unlock(&ctx->lock);
			sleep(1);
		}

		printf("Thread worker 1 exit...\n");
		return NULL;
}

void *thread_worker2(void *args)
{

	worker_ctx_t *ctx = (worker_ctx_t *)args;

	if( !args )
	{
		printf("%s() get invalid arguments\n",__func__);
		pthread_exit(NULL);
	}

	printf("Thread worker 2 [%ls] start running...\n",pthread_self());

	while(1)
	{
		if(0 != pthread_mutex_trylock(&ctx->lock))
		{
			continue;
		}

		printf("---: %s before shared_var++: %d\n",__func__,ctx->shared_var);
		ctx->shared_var ++;
		sleep(2);
		printf("---: %s after sleep shared_var:%d\n",__func__,ctx->shared_var);
		
		pthread_mutex_unlock(&ctx->lock);

		sleep(1);
	}

	printf("Thread worker  2 exit...\n");
	return NULL;
}

